diff --git a/README.md b/README.md
index 32c5e0a8..11257f48 100644
--- a/README.md
+++ b/README.md
@@ -137,6 +137,7 @@ return [
     'patchers' => [],                       // callable[]
     'whitelist' => [],                      // string[]
     'whitelist-global-constants' => true,   // bool
+    'whitelist-global-classes' => true,     // bool
     'whitelist-global-functions' => true,   // bool
 ];
 ```
@@ -270,11 +271,11 @@ a PHPUnit PHAR with isolated code, you still want the PHAR to be able to
 understand the `PHPUnit\Framework\TestCase` class.
 
 
-### Constants & functions from the global namespace
+### Constants & Classes & functions from the global namespace
 
-By default, PHP-Scoper will not prefix the user defined constants and functions
-belonging to the global namespace. You can however change that setting for them
-to be prefixed as usual unless explicitly whitelisted:
+By default, PHP-Scoper will prefix the user defined constants, classes and
+functions belonging to the global namespace. You can however change that
+setting for them to be prefixed as usual unless explicitly whitelisted:
 
 ```php
 <?php declare(strict_types=1);
@@ -283,6 +284,7 @@ to be prefixed as usual unless explicitly whitelisted:
 
 return [
     'whitelist-global-constants' => false,
+    'whitelist-global-classes' => false,
     'whitelist-global-functions' => false,
 ];
 ```
diff --git a/specs/class/abstract.php b/class/abstract.php
similarity index 87%
rename from specs/class/abstract.php
rename to class/abstract.php
index 419fed07..f3eb4cf8 100644
--- a/specs/class/abstract.php
+++ b/class/abstract.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
@@ -47,6 +48,35 @@ public abstract function b();
 PHP
     ,
 
+    'Declaration in the global namespace with global classes whitelisted' => [
+        'whitelist-global-classes' => true,
+        'registered-classes' => [
+            ['A', 'Humbug\A'],
+        ],
+        'payload' => <<<'PHP'
+<?php
+
+abstract class A {
+    public function a() {}
+    abstract public function b();
+}
+----
+<?php
+
+namespace Humbug;
+
+abstract class A
+{
+    public function a()
+    {
+    }
+    public abstract function b();
+}
+
+PHP
+        ,
+    ],
+
     'Declaration in the global namespace with the global namespace which is namespaced whitelisted' => [
         'whitelist' => ['\*'],
         'payload' => <<<'PHP'
@@ -154,6 +184,34 @@ public abstract function b();
 PHP
     ,
 
+    'Declaration in a namespace with global classes whitelisted' => [
+        'whitelist-global-classes' => true,
+        'payload' => <<<'PHP'
+<?php
+
+namespace Foo;
+
+abstract class A {
+    public function a() {}
+    abstract public function b();
+}
+----
+<?php
+
+namespace Humbug\Foo;
+
+abstract class A
+{
+    public function a()
+    {
+    }
+    public abstract function b();
+}
+
+PHP
+        ,
+    ],
+
     'Declaration in a whitelisted namespace' => [
         'whitelist' => ['Foo\*'],
         'payload' => <<<'PHP'
diff --git a/specs/class/anonymous.php b/class/anonymous.php
similarity index 83%
rename from specs/class/anonymous.php
rename to class/anonymous.php
index 4a61f26f..d373cd56 100644
--- a/specs/class/anonymous.php
+++ b/class/anonymous.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
@@ -90,6 +91,80 @@ public function test()
 PHP
     ,
 
+    'Declaration in the global namespace with global classes whitelisted' => [
+        'whitelist-global-classes' => true,
+        'registered-classes' => [
+            ['A', 'Humbug\A'],
+            ['B', 'Humbug\B'],
+            ['C', 'Humbug\C'],
+        ],
+        'payload' => <<<'PHP'
+<?php
+
+interface B {}
+interface C {}
+
+new class {
+    public function test() {}
+};
+new class extends A implements B, C, Iterator {};
+new class() {
+    public $foo;
+};
+new class($a, $b) extends A {
+    use T;
+};
+
+class A {
+    public function test() {
+        return new class($this) extends A {
+            const A = 'B';
+        };
+    }
+}
+----
+<?php
+
+namespace Humbug;
+
+interface B
+{
+}
+interface C
+{
+}
+new class
+{
+    public function test()
+    {
+    }
+};
+new class extends \Humbug\A implements \Humbug\B, \Humbug\C, \Iterator
+{
+};
+new class
+{
+    public $foo;
+};
+new class($a, $b) extends \Humbug\A
+{
+    use T;
+};
+class A
+{
+    public function test()
+    {
+        return new class($this) extends \Humbug\A
+        {
+            const A = 'B';
+        };
+    }
+}
+
+PHP
+        ,
+    ],
+
     'Declaration in the global namespace which is whitelisted' => [
         'whitelist' => ['\*'],
         'payload' => <<<'PHP'
diff --git a/specs/class/conditional.php b/class/conditional.php
similarity index 97%
rename from specs/class/conditional.php
rename to class/conditional.php
index 28e03393..94aac641 100644
--- a/specs/class/conditional.php
+++ b/class/conditional.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class/final.php b/class/final.php
similarity index 73%
rename from specs/class/final.php
rename to class/final.php
index 2a0812c8..f90409b2 100644
--- a/specs/class/final.php
+++ b/class/final.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
@@ -40,6 +41,27 @@ final class A
 PHP
     ,
 
+    'Declaration in the global namespace with global classes whitelisted' => [
+        'whitelist-global-classes' => true,
+        'registered-classes' => [
+            ['A', 'Humbug\A'],
+        ],
+        'payload' => <<<'PHP'
+<?php
+
+final class A {}
+----
+<?php
+
+namespace Humbug;
+
+final class A
+{
+}
+
+PHP
+    ],
+
     'Declaration in a namespace' => <<<'PHP'
 <?php
 
@@ -58,6 +80,26 @@ final class A
 PHP
     ,
 
+    'Declaration in a namespace with global classes whitelisted' => [
+        'whitelist-global-classes' => true,
+        'payload' => <<<'PHP'
+<?php
+
+namespace Foo;
+
+final class A {}
+----
+<?php
+
+namespace Humbug\Foo;
+
+final class A
+{
+}
+
+PHP
+    ],
+
     'Declaration of a whitelisted final class' => [
         'whitelist' => ['Foo\A'],
         'registered-classes' => [
diff --git a/specs/class/interface.php b/class/interface.php
similarity index 77%
rename from specs/class/interface.php
rename to class/interface.php
index 507e0064..75ed9259 100644
--- a/specs/class/interface.php
+++ b/class/interface.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
@@ -52,6 +53,41 @@ public function a();
 PHP
     ,
 
+    'Declaration in the global namespace with global classes whitelisted' => [
+        'whitelist-global-classes' => true,
+        'registered-classes' => [
+            ['A', 'Humbug\A'],
+            ['C', 'Humbug\C'],
+            ['D', 'Humbug\D'],
+        ],
+        'payload' => <<<'PHP'
+<?php
+
+class C {}
+class D {}
+
+interface A extends C, D, Iterator {
+    public function a();
+}
+----
+<?php
+
+namespace Humbug;
+
+class C
+{
+}
+class D
+{
+}
+interface A extends \Humbug\C, \Humbug\D, \Iterator
+{
+    public function a();
+}
+
+PHP
+    ],
+
     'Declaration in a namespace' => <<<'PHP'
 <?php
 
@@ -86,6 +122,42 @@ public function a();
 PHP
     ,
 
+    'Declaration in a namespace with global classes whitelisted' => [
+        'whitelist-global-classes' => true,
+        'payload' => <<<'PHP'
+<?php
+
+namespace Foo;
+
+use Iterator;
+
+class C {}
+class D {}
+
+interface A extends C, D, Iterator
+{
+    public function a();
+}
+----
+<?php
+
+namespace Humbug\Foo;
+
+use Iterator;
+class C
+{
+}
+class D
+{
+}
+interface A extends \Humbug\Foo\C, \Humbug\Foo\D, \Iterator
+{
+    public function a();
+}
+
+PHP
+    ],
+
     'Declaration of a whitelisted interface' => [
         'whitelist' => ['Foo\A'],
         'registered-classes' => [
diff --git a/specs/class/regular-extend.php b/class/regular-extend.php
similarity index 98%
rename from specs/class/regular-extend.php
rename to class/regular-extend.php
index afbad796..e69c8662 100644
--- a/specs/class/regular-extend.php
+++ b/class/regular-extend.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class/regular.php b/class/regular.php
similarity index 85%
rename from specs/class/regular.php
rename to class/regular.php
index 0886e8b1..8e1766ed 100644
--- a/specs/class/regular.php
+++ b/class/regular.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
@@ -45,6 +46,32 @@ public function a()
 PHP
     ,
 
+    'Declaration in the global namespace with global classes whitelisted' => [
+        'whitelist-global-classes' => true,
+        'registered-classes' => [
+            ['A', 'Humbug\A'],
+        ],
+        'payload' => <<<'PHP'
+<?php
+
+class A {
+    public function a() {}
+}
+----
+<?php
+
+namespace Humbug;
+
+class A
+{
+    public function a()
+    {
+    }
+}
+
+PHP
+    ],
+
     'Declaration in a namespace' => <<<'PHP'
 <?php
 
@@ -68,6 +95,31 @@ public function a()
 PHP
     ,
 
+    'Declaration in a namespace with global classes whitelisted' => [
+        'whitelist-global-classes' => true,
+        'payload' => <<<'PHP'
+<?php
+
+namespace Foo;
+
+class A {
+    public function a() {}
+}
+----
+<?php
+
+namespace Humbug\Foo;
+
+class A
+{
+    public function a()
+    {
+    }
+}
+
+PHP
+    ],
+
     'Declaration of a whitelisted class' => [
         'whitelist' => ['Foo\A'],
         'registered-classes' => [
diff --git a/specs/class/trait.php b/class/trait.php
similarity index 84%
rename from specs/class/trait.php
rename to class/trait.php
index e690279a..a54ea854 100644
--- a/specs/class/trait.php
+++ b/class/trait.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
@@ -75,6 +76,62 @@ class B
 PHP
     ,
 
+    'Declaration in the global namespace with global classes whitelisted' => [
+        'whitelist-global-classes' => true,
+        'registered-classes' => [
+            ['B', 'Humbug\B'],
+        ],
+        'payload' => <<<'PHP'
+<?php
+
+trait A {
+    public function a() {}
+}
+
+class B {
+    use C;
+    use D {
+        a as protected b;
+        c as d;
+        e as private;
+    }
+    use E, F, G {
+        E::a insteadof F, G;
+        E::b as protected c;
+        E::d as e;
+        E::f as private;
+    }
+}
+----
+<?php
+
+namespace Humbug;
+
+trait A
+{
+    public function a()
+    {
+    }
+}
+class B
+{
+    use C;
+    use D {
+        a as protected b;
+        c as d;
+        e as private;
+    }
+    use E, F, G {
+        E::a insteadof F, G;
+        E::b as protected c;
+        E::d as e;
+        E::f as private;
+    }
+}
+
+PHP
+    ],
+
     'Declaration in a namespace' => <<<'PHP'
 <?php
 
diff --git a/specs/binary/simple.php b/specs/binary/simple.php
index f69e4fb7..2ec1d2a5 100644
--- a/specs/binary/simple.php
+++ b/specs/binary/simple.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-FQ.php b/specs/class-FQ.php
index 1618abc5..6af6ee75 100644
--- a/specs/class-FQ.php
+++ b/specs/class-FQ.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-const/global-scope-single-level-with-single-level-use-statement-and-alias.php b/specs/class-const/global-scope-single-level-with-single-level-use-statement-and-alias.php
index eaf4b1e9..42676893 100644
--- a/specs/class-const/global-scope-single-level-with-single-level-use-statement-and-alias.php
+++ b/specs/class-const/global-scope-single-level-with-single-level-use-statement-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-const/global-scope-single-level-with-single-level-use-statement.php b/specs/class-const/global-scope-single-level-with-single-level-use-statement.php
index e2cee3c6..ecd8c7a6 100644
--- a/specs/class-const/global-scope-single-level-with-single-level-use-statement.php
+++ b/specs/class-const/global-scope-single-level-with-single-level-use-statement.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-const/global-scope-single-level.php b/specs/class-const/global-scope-single-level.php
index 941bd43b..f54c9028 100644
--- a/specs/class-const/global-scope-single-level.php
+++ b/specs/class-const/global-scope-single-level.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-const/global-scope-two-level-with-single-level-use-and-alias.php b/specs/class-const/global-scope-two-level-with-single-level-use-and-alias.php
index 89068029..5a84033f 100644
--- a/specs/class-const/global-scope-two-level-with-single-level-use-and-alias.php
+++ b/specs/class-const/global-scope-two-level-with-single-level-use-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-const/global-scope-two-level-with-single-level-use.php b/specs/class-const/global-scope-two-level-with-single-level-use.php
index 7be1fb62..864fe24e 100644
--- a/specs/class-const/global-scope-two-level-with-single-level-use.php
+++ b/specs/class-const/global-scope-two-level-with-single-level-use.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-const/global-scope-two-level.php b/specs/class-const/global-scope-two-level.php
index 23cd268b..4ab8833c 100644
--- a/specs/class-const/global-scope-two-level.php
+++ b/specs/class-const/global-scope-two-level.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-const/namespace-scope-single-level-with-single-level-use-statement-and-alias.php b/specs/class-const/namespace-scope-single-level-with-single-level-use-statement-and-alias.php
index 794caf8c..33b01a67 100644
--- a/specs/class-const/namespace-scope-single-level-with-single-level-use-statement-and-alias.php
+++ b/specs/class-const/namespace-scope-single-level-with-single-level-use-statement-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-const/namespace-scope-single-level.php b/specs/class-const/namespace-scope-single-level.php
index fb29df21..95ea189d 100644
--- a/specs/class-const/namespace-scope-single-level.php
+++ b/specs/class-const/namespace-scope-single-level.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-const/namespace-scope-two-level-with-single-level-use-and-alias.php b/specs/class-const/namespace-scope-two-level-with-single-level-use-and-alias.php
index 02c45b4a..ad9f38d0 100644
--- a/specs/class-const/namespace-scope-two-level-with-single-level-use-and-alias.php
+++ b/specs/class-const/namespace-scope-two-level-with-single-level-use-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-const/namespace-scope-two-level-with-single-level-use.php b/specs/class-const/namespace-scope-two-level-with-single-level-use.php
index f60340eb..39e7c747 100644
--- a/specs/class-const/namespace-scope-two-level-with-single-level-use.php
+++ b/specs/class-const/namespace-scope-two-level-with-single-level-use.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-const/namespace-scope-two-level.php b/specs/class-const/namespace-scope-two-level.php
index e3ceac35..42b67328 100644
--- a/specs/class-const/namespace-scope-two-level.php
+++ b/specs/class-const/namespace-scope-two-level.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-const/namespace-single-part-with-single-level-use-statement.php b/specs/class-const/namespace-single-part-with-single-level-use-statement.php
index 336ae183..82738b39 100644
--- a/specs/class-const/namespace-single-part-with-single-level-use-statement.php
+++ b/specs/class-const/namespace-single-part-with-single-level-use-statement.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-static-prop/global-scope-single-level-with-single-level-use-statement-and-alias.php b/specs/class-static-prop/global-scope-single-level-with-single-level-use-statement-and-alias.php
index f5a43165..e91f3e46 100644
--- a/specs/class-static-prop/global-scope-single-level-with-single-level-use-statement-and-alias.php
+++ b/specs/class-static-prop/global-scope-single-level-with-single-level-use-statement-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-static-prop/global-scope-single-level-with-single-level-use-statement.php b/specs/class-static-prop/global-scope-single-level-with-single-level-use-statement.php
index 84ef395e..26ab6f0a 100644
--- a/specs/class-static-prop/global-scope-single-level-with-single-level-use-statement.php
+++ b/specs/class-static-prop/global-scope-single-level-with-single-level-use-statement.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-static-prop/global-scope-single-level.php b/specs/class-static-prop/global-scope-single-level.php
index 0775ec0b..01d024b2 100644
--- a/specs/class-static-prop/global-scope-single-level.php
+++ b/specs/class-static-prop/global-scope-single-level.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-static-prop/global-scope-two-level-with-single-level-use-and-alias.php b/specs/class-static-prop/global-scope-two-level-with-single-level-use-and-alias.php
index 43da4183..8979bb1d 100644
--- a/specs/class-static-prop/global-scope-two-level-with-single-level-use-and-alias.php
+++ b/specs/class-static-prop/global-scope-two-level-with-single-level-use-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-static-prop/global-scope-two-level-with-single-level-use.php b/specs/class-static-prop/global-scope-two-level-with-single-level-use.php
index f046931a..d8d665ff 100644
--- a/specs/class-static-prop/global-scope-two-level-with-single-level-use.php
+++ b/specs/class-static-prop/global-scope-two-level-with-single-level-use.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-static-prop/global-scope-two-level.php b/specs/class-static-prop/global-scope-two-level.php
index 9185701f..5cfa5a91 100644
--- a/specs/class-static-prop/global-scope-two-level.php
+++ b/specs/class-static-prop/global-scope-two-level.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-static-prop/namespace-scope-single-level-with-single-level-use-statement-and-alias.php b/specs/class-static-prop/namespace-scope-single-level-with-single-level-use-statement-and-alias.php
index 3bfc7ae6..aa4e9a01 100644
--- a/specs/class-static-prop/namespace-scope-single-level-with-single-level-use-statement-and-alias.php
+++ b/specs/class-static-prop/namespace-scope-single-level-with-single-level-use-statement-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-static-prop/namespace-scope-single-level.php b/specs/class-static-prop/namespace-scope-single-level.php
index 296332fe..a017037e 100644
--- a/specs/class-static-prop/namespace-scope-single-level.php
+++ b/specs/class-static-prop/namespace-scope-single-level.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-static-prop/namespace-scope-two-level-with-single-level-use-and-alias.php b/specs/class-static-prop/namespace-scope-two-level-with-single-level-use-and-alias.php
index 840cee23..61ec22d6 100644
--- a/specs/class-static-prop/namespace-scope-two-level-with-single-level-use-and-alias.php
+++ b/specs/class-static-prop/namespace-scope-two-level-with-single-level-use-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-static-prop/namespace-scope-two-level-with-single-level-use.php b/specs/class-static-prop/namespace-scope-two-level-with-single-level-use.php
index 3ad9e6e0..b39a93b6 100644
--- a/specs/class-static-prop/namespace-scope-two-level-with-single-level-use.php
+++ b/specs/class-static-prop/namespace-scope-two-level-with-single-level-use.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-static-prop/namespace-scope-two-level.php b/specs/class-static-prop/namespace-scope-two-level.php
index e7dabc01..a81dbbfd 100644
--- a/specs/class-static-prop/namespace-scope-two-level.php
+++ b/specs/class-static-prop/namespace-scope-two-level.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/class-static-prop/namespace-single-part-with-single-level-use-statement.php b/specs/class-static-prop/namespace-single-part-with-single-level-use-statement.php
index 50a82675..5a39f961 100644
--- a/specs/class-static-prop/namespace-single-part-with-single-level-use-statement.php
+++ b/specs/class-static-prop/namespace-single-part-with-single-level-use-statement.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/const-declaration-with-global-whitelisting.php b/specs/const/const-declaration-with-global-whitelisting.php
index 9cc22438..1438baad 100644
--- a/specs/const/const-declaration-with-global-whitelisting.php
+++ b/specs/const/const-declaration-with-global-whitelisting.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/const-declaration.php b/specs/const/const-declaration.php
index 50d74d93..0806f973 100644
--- a/specs/const/const-declaration.php
+++ b/specs/const/const-declaration.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/global-scope-global-with-global-whitelisting.php b/specs/const/global-scope-global-with-global-whitelisting.php
index e3f308b3..418d5040 100644
--- a/specs/const/global-scope-global-with-global-whitelisting.php
+++ b/specs/const/global-scope-global-with-global-whitelisting.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/global-scope-global-with-single-level-use-statement-and-alias.php b/specs/const/global-scope-global-with-single-level-use-statement-and-alias.php
index 480bfab6..2dffaaaf 100644
--- a/specs/const/global-scope-global-with-single-level-use-statement-and-alias.php
+++ b/specs/const/global-scope-global-with-single-level-use-statement-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/global-scope-global-with-single-level-use-statement-with-global-whitelisting.php b/specs/const/global-scope-global-with-single-level-use-statement-with-global-whitelisting.php
index b1cd1596..0e8086be 100644
--- a/specs/const/global-scope-global-with-single-level-use-statement-with-global-whitelisting.php
+++ b/specs/const/global-scope-global-with-single-level-use-statement-with-global-whitelisting.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/global-scope-global-with-single-level-use-statement.php b/specs/const/global-scope-global-with-single-level-use-statement.php
index ec9693f3..6020ff04 100644
--- a/specs/const/global-scope-global-with-single-level-use-statement.php
+++ b/specs/const/global-scope-global-with-single-level-use-statement.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/global-scope-global.php b/specs/const/global-scope-global.php
index b7be1b85..9d9dc109 100644
--- a/specs/const/global-scope-global.php
+++ b/specs/const/global-scope-global.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/global-scope-single-part-namespaced-with-single-level-use-alias.php b/specs/const/global-scope-single-part-namespaced-with-single-level-use-alias.php
index 225437a8..85615ee4 100644
--- a/specs/const/global-scope-single-part-namespaced-with-single-level-use-alias.php
+++ b/specs/const/global-scope-single-part-namespaced-with-single-level-use-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/global-scope-single-part-namespaced-with-single-level-use.php b/specs/const/global-scope-single-part-namespaced-with-single-level-use.php
index 93b67725..01d0d7d4 100644
--- a/specs/const/global-scope-single-part-namespaced-with-single-level-use.php
+++ b/specs/const/global-scope-single-part-namespaced-with-single-level-use.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/global-scope-single-part-namespaced.php b/specs/const/global-scope-single-part-namespaced.php
index ea3d82c8..5a718d50 100644
--- a/specs/const/global-scope-single-part-namespaced.php
+++ b/specs/const/global-scope-single-part-namespaced.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/global-scope-two-parts-namespaced-with-single-level-use-and-alias.php b/specs/const/global-scope-two-parts-namespaced-with-single-level-use-and-alias.php
index cdcad581..dbc9add0 100644
--- a/specs/const/global-scope-two-parts-namespaced-with-single-level-use-and-alias.php
+++ b/specs/const/global-scope-two-parts-namespaced-with-single-level-use-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/global-scope-two-parts-namespaced-with-single-level-use.php b/specs/const/global-scope-two-parts-namespaced-with-single-level-use.php
index 72e7fa61..a27e7092 100644
--- a/specs/const/global-scope-two-parts-namespaced-with-single-level-use.php
+++ b/specs/const/global-scope-two-parts-namespaced-with-single-level-use.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/global-scope-two-parts-namespaced.php b/specs/const/global-scope-two-parts-namespaced.php
index 01202d8e..7735025b 100644
--- a/specs/const/global-scope-two-parts-namespaced.php
+++ b/specs/const/global-scope-two-parts-namespaced.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/namespace-global-with-global-whitelisting.php b/specs/const/namespace-global-with-global-whitelisting.php
index 50c07a54..3d0f82af 100644
--- a/specs/const/namespace-global-with-global-whitelisting.php
+++ b/specs/const/namespace-global-with-global-whitelisting.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/namespace-global-with-single-level-use-statement-and-alias.php b/specs/const/namespace-global-with-single-level-use-statement-and-alias.php
index 932acb5d..7b609835 100644
--- a/specs/const/namespace-global-with-single-level-use-statement-and-alias.php
+++ b/specs/const/namespace-global-with-single-level-use-statement-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/namespace-global-with-single-level-use-statement.php b/specs/const/namespace-global-with-single-level-use-statement.php
index 62e8908b..2fea5c35 100644
--- a/specs/const/namespace-global-with-single-level-use-statement.php
+++ b/specs/const/namespace-global-with-single-level-use-statement.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/namespace-global.php b/specs/const/namespace-global.php
index cfc1e806..2360f943 100644
--- a/specs/const/namespace-global.php
+++ b/specs/const/namespace-global.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/namespace-single-part-namespaced.php b/specs/const/namespace-single-part-namespaced.php
index 96f9f515..8ab5b086 100644
--- a/specs/const/namespace-single-part-namespaced.php
+++ b/specs/const/namespace-single-part-namespaced.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/native-const-with-global-whitelisting.php b/specs/const/native-const-with-global-whitelisting.php
index 007a848a..7a6d9f47 100644
--- a/specs/const/native-const-with-global-whitelisting.php
+++ b/specs/const/native-const-with-global-whitelisting.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/const/native-const.php b/specs/const/native-const.php
index 26dda4aa..d72bb114 100644
--- a/specs/const/native-const.php
+++ b/specs/const/native-const.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/exp/cast.php b/specs/exp/cast.php
index ec82e97f..373d82a5 100644
--- a/specs/exp/cast.php
+++ b/specs/exp/cast.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/exp/catch.php b/specs/exp/catch.php
index 63fc4bb1..50e7eebb 100644
--- a/specs/exp/catch.php
+++ b/specs/exp/catch.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/exp/instanceof.php b/specs/exp/instanceof.php
index 408d4a74..62fdfc97 100644
--- a/specs/exp/instanceof.php
+++ b/specs/exp/instanceof.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/func-declaration/global.php b/specs/func-declaration/global.php
index b42d1286..88e5b758 100644
--- a/specs/func-declaration/global.php
+++ b/specs/func-declaration/global.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/func-declaration/method.php b/specs/func-declaration/method.php
index 93893b38..6f49d379 100644
--- a/specs/func-declaration/method.php
+++ b/specs/func-declaration/method.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/func-declaration/namespace.php b/specs/func-declaration/namespace.php
index 01c77b71..e4a0a224 100644
--- a/specs/func-declaration/namespace.php
+++ b/specs/func-declaration/namespace.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/function/global-scope-global-func-with-single-level-use-statement-and-alias.php b/specs/function/global-scope-global-func-with-single-level-use-statement-and-alias.php
index 6e07df6e..4b614547 100644
--- a/specs/function/global-scope-global-func-with-single-level-use-statement-and-alias.php
+++ b/specs/function/global-scope-global-func-with-single-level-use-statement-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/function/global-scope-global-func-with-single-level-use-statement.php b/specs/function/global-scope-global-func-with-single-level-use-statement.php
index 498ac2e4..a6cc9c3c 100644
--- a/specs/function/global-scope-global-func-with-single-level-use-statement.php
+++ b/specs/function/global-scope-global-func-with-single-level-use-statement.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/function/global-scope-global-func.php b/specs/function/global-scope-global-func.php
index 36b2e566..298bdb73 100644
--- a/specs/function/global-scope-global-func.php
+++ b/specs/function/global-scope-global-func.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/function/global-scope-single-part-namespaced-func-with-single-level-use-and-alias.php b/specs/function/global-scope-single-part-namespaced-func-with-single-level-use-and-alias.php
index dc602104..d4ab3b7e 100644
--- a/specs/function/global-scope-single-part-namespaced-func-with-single-level-use-and-alias.php
+++ b/specs/function/global-scope-single-part-namespaced-func-with-single-level-use-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/function/global-scope-single-part-namespaced-func-with-single-level-use.php b/specs/function/global-scope-single-part-namespaced-func-with-single-level-use.php
index 2d4d3d51..22a3c19f 100644
--- a/specs/function/global-scope-single-part-namespaced-func-with-single-level-use.php
+++ b/specs/function/global-scope-single-part-namespaced-func-with-single-level-use.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/function/global-scope-single-part-namespaced-func.php b/specs/function/global-scope-single-part-namespaced-func.php
index 9fec4b99..ae939177 100644
--- a/specs/function/global-scope-single-part-namespaced-func.php
+++ b/specs/function/global-scope-single-part-namespaced-func.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/function/namespace-global-func-with-single-level-use-statement-and-alias.php b/specs/function/namespace-global-func-with-single-level-use-statement-and-alias.php
index d5002b1c..e3a898ef 100644
--- a/specs/function/namespace-global-func-with-single-level-use-statement-and-alias.php
+++ b/specs/function/namespace-global-func-with-single-level-use-statement-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/function/namespace-global-func-with-single-level-use-statement.php b/specs/function/namespace-global-func-with-single-level-use-statement.php
index 27c06089..e8106997 100644
--- a/specs/function/namespace-global-func-with-single-level-use-statement.php
+++ b/specs/function/namespace-global-func-with-single-level-use-statement.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/function/namespace-global-func.php b/specs/function/namespace-global-func.php
index 5796f70f..30141650 100644
--- a/specs/function/namespace-global-func.php
+++ b/specs/function/namespace-global-func.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/function/namespace-global-scope-func.php b/specs/function/namespace-global-scope-func.php
index 4921259f..71133c9d 100644
--- a/specs/function/namespace-global-scope-func.php
+++ b/specs/function/namespace-global-scope-func.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/function/namespace-single-part-namespaced-func.php b/specs/function/namespace-single-part-namespaced-func.php
index db59c57c..98d62bd1 100644
--- a/specs/function/namespace-single-part-namespaced-func.php
+++ b/specs/function/namespace-single-part-namespaced-func.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/function/native-func.php b/specs/function/native-func.php
index 2f9bb8b9..0c4e1950 100644
--- a/specs/function/native-func.php
+++ b/specs/function/native-func.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/misc.php b/specs/misc.php
index 65264187..b0467fd8 100644
--- a/specs/misc.php
+++ b/specs/misc.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/namespace/after-hashbang.php b/specs/namespace/after-hashbang.php
index 7d04cbf6..1ead404a 100644
--- a/specs/namespace/after-hashbang.php
+++ b/specs/namespace/after-hashbang.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/namespace/braces.php b/specs/namespace/braces.php
index 5ee92d11..de98b262 100644
--- a/specs/namespace/braces.php
+++ b/specs/namespace/braces.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/namespace/creation-for-whitelist.php b/specs/namespace/creation-for-whitelist.php
index c521dba1..0446a8ea 100644
--- a/specs/namespace/creation-for-whitelist.php
+++ b/specs/namespace/creation-for-whitelist.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/namespace/no-braces.php b/specs/namespace/no-braces.php
index 292d612c..b23cd523 100644
--- a/specs/namespace/no-braces.php
+++ b/specs/namespace/no-braces.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/namespace/outside-statements.php b/specs/namespace/outside-statements.php
index 503d154b..8855a569 100644
--- a/specs/namespace/outside-statements.php
+++ b/specs/namespace/outside-statements.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/new/global-scope-single-part-with-single-level-use-statement-an-alias.php b/specs/new/global-scope-single-part-with-single-level-use-statement-an-alias.php
index 22812053..50e6c285 100644
--- a/specs/new/global-scope-single-part-with-single-level-use-statement-an-alias.php
+++ b/specs/new/global-scope-single-part-with-single-level-use-statement-an-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/new/global-scope-single-part-with-single-level-use-statement.php b/specs/new/global-scope-single-part-with-single-level-use-statement.php
index d4c9faad..1656b8d7 100644
--- a/specs/new/global-scope-single-part-with-single-level-use-statement.php
+++ b/specs/new/global-scope-single-part-with-single-level-use-statement.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/new/global-scope-single-part.php b/specs/new/global-scope-single-part.php
index 3484ce3c..be42c907 100644
--- a/specs/new/global-scope-single-part.php
+++ b/specs/new/global-scope-single-part.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/new/global-scope-two-parts-with-single-level-use-and-alias.php b/specs/new/global-scope-two-parts-with-single-level-use-and-alias.php
index 85d12fa6..c97312c7 100644
--- a/specs/new/global-scope-two-parts-with-single-level-use-and-alias.php
+++ b/specs/new/global-scope-two-parts-with-single-level-use-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/new/global-scope-two-parts-with-single-level-use.php b/specs/new/global-scope-two-parts-with-single-level-use.php
index 33bf6331..56f7b4e5 100644
--- a/specs/new/global-scope-two-parts-with-single-level-use.php
+++ b/specs/new/global-scope-two-parts-with-single-level-use.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/new/global-scope-two-parts.php b/specs/new/global-scope-two-parts.php
index 21744270..0e518c7d 100644
--- a/specs/new/global-scope-two-parts.php
+++ b/specs/new/global-scope-two-parts.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/new/namespace-single-part-with-single-level-use-statement.php b/specs/new/namespace-single-part-with-single-level-use-statement.php
index 9e6d9bcf..52b74990 100644
--- a/specs/new/namespace-single-part-with-single-level-use-statement.php
+++ b/specs/new/namespace-single-part-with-single-level-use-statement.php
@@ -20,6 +20,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/new/namespace-single-part.php b/specs/new/namespace-single-part.php
index def0f0bd..315ee527 100644
--- a/specs/new/namespace-single-part.php
+++ b/specs/new/namespace-single-part.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/new/namespace-two-parts-with-single-level-use.php b/specs/new/namespace-two-parts-with-single-level-use.php
index f552efb3..d0ef96bf 100644
--- a/specs/new/namespace-two-parts-with-single-level-use.php
+++ b/specs/new/namespace-two-parts-with-single-level-use.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/new/namespace-two-parts-with-two-level-use.php b/specs/new/namespace-two-parts-with-two-level-use.php
index 02f0458f..dcece728 100644
--- a/specs/new/namespace-two-parts-with-two-level-use.php
+++ b/specs/new/namespace-two-parts-with-two-level-use.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/new/namespace-two-parts.php b/specs/new/namespace-two-parts.php
index 2932ab30..9b713753 100644
--- a/specs/new/namespace-two-parts.php
+++ b/specs/new/namespace-two-parts.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/special-keywords/self-static-parent-const.php b/specs/special-keywords/self-static-parent-const.php
index d28cff5e..2cfa1bae 100644
--- a/specs/special-keywords/self-static-parent-const.php
+++ b/specs/special-keywords/self-static-parent-const.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/special-keywords/self-static-parent-method.php b/specs/special-keywords/self-static-parent-method.php
index 17b582b3..9fddc508 100644
--- a/specs/special-keywords/self-static-parent-method.php
+++ b/specs/special-keywords/self-static-parent-method.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/special-keywords/self-static-parent-static-var.php b/specs/special-keywords/self-static-parent-static-var.php
index 793afc54..4e24fa47 100644
--- a/specs/special-keywords/self-static-parent-static-var.php
+++ b/specs/special-keywords/self-static-parent-static-var.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/static-method/global-scope-single-part-with-single-level-use-statement-and-alias.php b/specs/static-method/global-scope-single-part-with-single-level-use-statement-and-alias.php
index 798ddbc1..fe4d4c28 100644
--- a/specs/static-method/global-scope-single-part-with-single-level-use-statement-and-alias.php
+++ b/specs/static-method/global-scope-single-part-with-single-level-use-statement-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/static-method/global-scope-single-part-with-single-level-use-statement.php b/specs/static-method/global-scope-single-part-with-single-level-use-statement.php
index 79fb45fd..86e7296e 100644
--- a/specs/static-method/global-scope-single-part-with-single-level-use-statement.php
+++ b/specs/static-method/global-scope-single-part-with-single-level-use-statement.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/static-method/global-scope-single-part.php b/specs/static-method/global-scope-single-part.php
index b604e3cc..0778535e 100644
--- a/specs/static-method/global-scope-single-part.php
+++ b/specs/static-method/global-scope-single-part.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/static-method/global-scope-two-parts-with-single-level-use-and-alias.php b/specs/static-method/global-scope-two-parts-with-single-level-use-and-alias.php
index 366bed52..6864dba2 100644
--- a/specs/static-method/global-scope-two-parts-with-single-level-use-and-alias.php
+++ b/specs/static-method/global-scope-two-parts-with-single-level-use-and-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/static-method/global-scope-two-parts-with-single-level-use.php b/specs/static-method/global-scope-two-parts-with-single-level-use.php
index b85c54ca..817fe544 100644
--- a/specs/static-method/global-scope-two-parts-with-single-level-use.php
+++ b/specs/static-method/global-scope-two-parts-with-single-level-use.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/static-method/global-scope-two-parts.php b/specs/static-method/global-scope-two-parts.php
index 1027e51b..851c1625 100644
--- a/specs/static-method/global-scope-two-parts.php
+++ b/specs/static-method/global-scope-two-parts.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/static-method/namespace-single-part-with-single-level-use-statement.php b/specs/static-method/namespace-single-part-with-single-level-use-statement.php
index ffca3298..cc7e42f7 100644
--- a/specs/static-method/namespace-single-part-with-single-level-use-statement.php
+++ b/specs/static-method/namespace-single-part-with-single-level-use-statement.php
@@ -20,6 +20,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/static-method/namespace-single-part.php b/specs/static-method/namespace-single-part.php
index 4d4b066f..aa631331 100644
--- a/specs/static-method/namespace-single-part.php
+++ b/specs/static-method/namespace-single-part.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/static-method/namespace-two-parts-with-single-level-use.php b/specs/static-method/namespace-two-parts-with-single-level-use.php
index d3ee81e9..623a9dab 100644
--- a/specs/static-method/namespace-two-parts-with-single-level-use.php
+++ b/specs/static-method/namespace-two-parts-with-single-level-use.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/static-method/namespace-two-parts-with-two-level-use.php b/specs/static-method/namespace-two-parts-with-two-level-use.php
index 3d87f16e..0a92f5ec 100644
--- a/specs/static-method/namespace-two-parts-with-two-level-use.php
+++ b/specs/static-method/namespace-two-parts-with-two-level-use.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/static-method/namespace-two-parts.php b/specs/static-method/namespace-two-parts.php
index eaca518c..1257251f 100644
--- a/specs/static-method/namespace-two-parts.php
+++ b/specs/static-method/namespace-two-parts.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/use/use-class-alias.php b/specs/use/use-class-alias.php
index d718bbf0..625ed7de 100644
--- a/specs/use/use-class-alias.php
+++ b/specs/use/use-class-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/use/use-class-group.php b/specs/use/use-class-group.php
index a1661b0d..c52df696 100644
--- a/specs/use/use-class-group.php
+++ b/specs/use/use-class-group.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/use/use-class.php b/specs/use/use-class.php
index 50b25385..e70e8526 100644
--- a/specs/use/use-class.php
+++ b/specs/use/use-class.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/use/use-const-alias.php b/specs/use/use-const-alias.php
index b6c8c703..70498c11 100644
--- a/specs/use/use-const-alias.php
+++ b/specs/use/use-const-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/use/use-const-group.php b/specs/use/use-const-group.php
index b043905a..83d41d68 100644
--- a/specs/use/use-const-group.php
+++ b/specs/use/use-const-group.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/use/use-const.php b/specs/use/use-const.php
index db1fee7e..eca8a068 100644
--- a/specs/use/use-const.php
+++ b/specs/use/use-const.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/use/use-func-alias.php b/specs/use/use-func-alias.php
index 6f65d3e3..b8297fb7 100644
--- a/specs/use/use-func-alias.php
+++ b/specs/use/use-func-alias.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/use/use-func-group.php b/specs/use/use-func-group.php
index 05202fce..4989d62c 100644
--- a/specs/use/use-func-group.php
+++ b/specs/use/use-func-group.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/use/use-func.php b/specs/use/use-func.php
index 0276fe85..77aff1e6 100644
--- a/specs/use/use-func.php
+++ b/specs/use/use-func.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/use/use-mix-group.php b/specs/use/use-mix-group.php
index a54a6ec3..d62ff455 100644
--- a/specs/use/use-mix-group.php
+++ b/specs/use/use-mix-group.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => true,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/specs/whitelist-case-sensitiveness.php b/specs/whitelist-case-sensitiveness.php
index 1fb159d2..bf4e2879 100644
--- a/specs/whitelist-case-sensitiveness.php
+++ b/specs/whitelist-case-sensitiveness.php
@@ -19,6 +19,7 @@
         'prefix' => 'Humbug',
         'whitelist' => [],
         'whitelist-global-constants' => false,
+        'whitelist-global-classes' => false,
         'whitelist-global-functions' => true,
         'registered-classes' => [],
         'registered-functions' => [],
diff --git a/src/Configuration.php b/src/Configuration.php
index adce798f..8207d4d3 100644
--- a/src/Configuration.php
+++ b/src/Configuration.php
@@ -33,6 +33,7 @@ class Configuration
     private const PATCHERS_KEYWORD = 'patchers';
     private const WHITELIST_KEYWORD = 'whitelist';
     private const WHITELIST_GLOBAL_CONSTANTS_KEYWORD = 'whitelist-global-constants';
+    private const WHITELIST_GLOBAL_CLASSES_KEYWORD = 'whitelist-global-classes';
     private const WHITELIST_GLOBAL_FUNCTIONS_KEYWORD = 'whitelist-global-functions';
 
     private const KEYWORDS = [
@@ -283,7 +284,23 @@ private static function retrieveWhitelist(array $config): Whitelist
                     sprintf(
                         'Expected %s to be a boolean, found "%s" instead.',
                         self::WHITELIST_GLOBAL_CONSTANTS_KEYWORD,
-                        gettype($whitelist)
+                        gettype($whitelistGlobalConstants)
+                    )
+                );
+            }
+        }
+
+        if (false === array_key_exists(self::WHITELIST_GLOBAL_CLASSES_KEYWORD, $config)) {
+            $whitelistGlobalClasses = true;
+        } else {
+            $whitelistGlobalClasses = $config[self::WHITELIST_GLOBAL_CLASSES_KEYWORD];
+
+            if (false === is_bool($whitelistGlobalClasses)) {
+                throw new InvalidArgumentException(
+                    sprintf(
+                        'Expected %s to be a boolean, found "%s" instead.',
+                        self::WHITELIST_GLOBAL_CLASSES_KEYWORD,
+                        gettype($whitelistGlobalClasses)
                     )
                 );
             }
@@ -299,13 +316,13 @@ private static function retrieveWhitelist(array $config): Whitelist
                     sprintf(
                         'Expected %s to be a boolean, found "%s" instead.',
                         self::WHITELIST_GLOBAL_FUNCTIONS_KEYWORD,
-                        gettype($whitelist)
+                        gettype($whitelistGlobalFunctions)
                     )
                 );
             }
         }
 
-        return Whitelist::create($whitelistGlobalConstants, $whitelistGlobalFunctions, ...$whitelist);
+        return Whitelist::create($whitelistGlobalConstants, $whitelistGlobalClasses, $whitelistGlobalFunctions, ...$whitelist);
     }
 
     private static function retrieveFinders(array $config): array
diff --git a/src/Whitelist.php b/src/Whitelist.php
index 5b2d4471..413a3594 100644
--- a/src/Whitelist.php
+++ b/src/Whitelist.php
@@ -44,13 +44,18 @@ final class Whitelist implements Countable
     private $patterns;
 
     private $whitelistGlobalConstants;
+    private $whitelistGlobalClasses;
     private $whitelistGlobalFunctions;
 
     private $whitelistedFunctions = [];
     private $whitelistedClasses = [];
 
-    public static function create(bool $whitelistGlobalConstants, bool $whitelistGlobalFunctions, string ...$elements): self
-    {
+    public static function create(
+        bool $whitelistGlobalConstants,
+        bool $whitelistGlobalClasses,
+        bool $whitelistGlobalFunctions,
+        string ...$elements
+    ): self {
         $symbols = [];
         $constants = [];
         $namespaces = [];
@@ -100,6 +105,7 @@ public static function create(bool $whitelistGlobalConstants, bool $whitelistGlo
 
         return new self(
             $whitelistGlobalConstants,
+            $whitelistGlobalClasses,
             $whitelistGlobalFunctions,
             array_unique($original),
             array_flip($symbols),
@@ -128,6 +134,7 @@ private static function assertValidPattern(string $element): void
      */
     private function __construct(
         bool $whitelistGlobalConstants,
+        bool $whitelistGlobalClasses,
         bool $whitelistGlobalFunctions,
         array $original,
         array $symbols,
@@ -136,6 +143,7 @@ private function __construct(
         array $namespaces
     ) {
         $this->whitelistGlobalConstants = $whitelistGlobalConstants;
+        $this->whitelistGlobalClasses = $whitelistGlobalClasses;
         $this->whitelistGlobalFunctions = $whitelistGlobalFunctions;
         $this->original = $original;
         $this->symbols = $symbols;
@@ -207,12 +215,12 @@ public function isGlobalWhitelistedConstant(string $constantName): bool
      */
     public function whitelistGlobalClasses(): bool
     {
-        return $this->whitelistGlobalFunctions;
+        return $this->whitelistGlobalClasses;
     }
 
     public function isGlobalWhitelistedClass(string $className): bool
     {
-        return false;
+        return $this->whitelistGlobalClasses && false === strpos($className, '\\');
     }
 
     public function recordWhitelistedClass(FullyQualified $original, FullyQualified $alias): void
diff --git a/src/scoper.inc.php.tpl b/src/scoper.inc.php.tpl
index 53b3a8de..315d36a9 100644
--- a/src/scoper.inc.php.tpl
+++ b/src/scoper.inc.php.tpl
@@ -64,11 +64,16 @@ return [
 
     // If `true` then the user defined constants belonging to the global namespace will not be prefixed.
     //
-    // For more see https://github.com/humbug/php-scoper#constants-from-the-global-namespace-whitelisting
+    // For more see https://github.com/humbug/php-scoper#constants--constants--functions-from-the-global-namespace
+    'whitelist-global-constants' => true,
+
+    // If `true` then the user defined classes belonging to the global namespace will not be prefixed.
+    //
+    // For more see https://github.com/humbug/php-scoper#constants--constants--functions-from-the-global-namespace
     'whitelist-global-constants' => true,
 
     // If `true` then the user defined functions belonging to the global namespace will not be prefixed.
     //
-    // For more see https://github.com/humbug/php-scoper#global-user-functions
+    // For more see https://github.com/humbug/php-scoper#constants--constants--functions-from-the-global-namespace
     'whitelist-global-functions' => true,
 ];
diff --git a/tests/Autoload/ScoperAutoloadGeneratorTest.php b/tests/Autoload/ScoperAutoloadGeneratorTest.php
index 2171b39d..c1cf94a7 100644
--- a/tests/Autoload/ScoperAutoloadGeneratorTest.php
+++ b/tests/Autoload/ScoperAutoloadGeneratorTest.php
@@ -37,7 +37,7 @@ public function test_generate_the_autoload(Whitelist $whitelist, string $expecte
     public function provideWhitelists()
     {
         yield [
-            Whitelist::create(true, true),
+            Whitelist::create(true, true, true),
             <<<'PHP'
 <?php
 
@@ -51,7 +51,7 @@ public function provideWhitelists()
         ];
 
         yield [
-            Whitelist::create(true, true, 'A\Foo', 'B\Bar'),
+            Whitelist::create(true, true, true, 'A\Foo', 'B\Bar'),
             <<<'PHP'
 <?php
 
@@ -71,7 +71,7 @@ class_exists('Humbug\B\Bar');
 
         yield [
             (function () {
-                $whitelist = Whitelist::create(true, true);
+                $whitelist = Whitelist::create(true, true, true);
 
                 $whitelist->recordWhitelistedFunction(
                     new FullyQualified('foo'),
@@ -112,7 +112,7 @@ function bar() {
 
         yield [
             (function () {
-                $whitelist = Whitelist::create(true, true);
+                $whitelist = Whitelist::create(true, true, true);
 
                 $whitelist->recordWhitelistedFunction(
                     new FullyQualified('Acme\foo'),
@@ -173,7 +173,7 @@ function baz() {
 
         yield [
             (function () {
-                $whitelist = Whitelist::create(true, true, 'A\Foo', 'B\Bar');
+                $whitelist = Whitelist::create(true, true, true, 'A\Foo', 'B\Bar');
 
                 $whitelist->recordWhitelistedFunction(
                     new FullyQualified('foo'),
diff --git a/tests/Console/Command/AddPrefixCommandTest.php b/tests/Console/Command/AddPrefixCommandTest.php
index 42d3dac9..529777c7 100644
--- a/tests/Console/Command/AddPrefixCommandTest.php
+++ b/tests/Console/Command/AddPrefixCommandTest.php
@@ -174,7 +174,7 @@ public function test_scope_the_given_paths()
                     $inputContents,
                     'MyPrefix',
                     [],
-                    Whitelist::create(true, true)
+                    Whitelist::create(true, true, true)
                 )
                 ->willReturn($prefixedContents)
             ;
@@ -237,7 +237,7 @@ public function test_let_the_file_unchanged_when_cannot_scope_a_file()
                         $inputContents,
                         'MyPrefix',
                         [],
-                        Whitelist::create(true, true)
+                        Whitelist::create(true, true, true)
                     )
                     ->willReturn($prefixedContents)
                 ;
@@ -250,7 +250,7 @@ public function test_let_the_file_unchanged_when_cannot_scope_a_file()
                         $inputContents,
                         'MyPrefix',
                         [],
-                        Whitelist::create(true, true)
+                        Whitelist::create(true, true, true)
                     )
                     ->willThrow(new \RuntimeException('Scoping of the file failed'))
                 ;
@@ -310,7 +310,7 @@ public function test_do_not_scope_duplicated_given_paths()
                     $inputContents,
                     'MyPrefix',
                     [],
-                    Whitelist::create(true, true)
+                    Whitelist::create(true, true, true)
                 )
                 ->willReturn($prefixedContents)
             ;
@@ -371,7 +371,7 @@ public function test_scope_the_given_paths_and_the_ones_found_by_the_finder()
                     $inputContents,
                     'MyPrefix',
                     [],
-                    Whitelist::create(true, true)
+                    Whitelist::create(true, true, true)
                 )
                 ->willReturn($prefixedFileContents)
             ;
@@ -425,7 +425,7 @@ function (string $prefix): bool {
                     }
                 ),
                 [],
-                Whitelist::create(true, true)
+                Whitelist::create(true, true, true)
             )
             ->willReturn('')
         ;
@@ -483,7 +483,7 @@ public function test_scope_the_current_working_directory_if_no_path_given()
                     $inputContents,
                     'MyPrefix',
                     [],
-                    Whitelist::create(true, true)
+                    Whitelist::create(true, true, true)
                 )
                 ->willReturn($prefixedContents)
             ;
@@ -529,7 +529,7 @@ public function test_prefix_can_end_by_a_backslash()
                 Argument::any(),
                 'MyPrefix',
                 [],
-                Whitelist::create(true, true)
+                Whitelist::create(true, true, true)
             )
             ->willReturn('')
         ;
@@ -572,7 +572,7 @@ public function test_prefix_can_end_by_multiple_backslashes()
                 Argument::any(),
                 'MyPrefix',
                 [],
-                Whitelist::create(true, true)
+                Whitelist::create(true, true, true)
             )
             ->willReturn('')
         ;
@@ -630,7 +630,7 @@ public function test_an_output_directory_can_be_given()
                     $inputContents,
                     'MyPrefix',
                     [],
-                    Whitelist::create(true, true)
+                    Whitelist::create(true, true, true)
                 )
                 ->willReturn($prefixedContents)
             ;
@@ -692,7 +692,7 @@ public function test_relative_output_directory_are_made_absolute()
                     $inputContents,
                     'MyPrefix',
                     [],
-                    Whitelist::create(true, true)
+                    Whitelist::create(true, true, true)
                 )
                 ->willReturn($prefixedContents)
             ;
@@ -783,7 +783,7 @@ public function test_attempts_to_use_patch_file_in_current_directory()
 
                         return true;
                     }),
-                    Whitelist::create(true, true)
+                    Whitelist::create(true, true, true)
                 )
                 ->willReturn($prefixedContents)
             ;
@@ -868,7 +868,7 @@ public function test_can_scope_projects_with_invalid_files()
                     $fileContents,
                     'MyPrefix',
                     [],
-                    Whitelist::create(true, true)
+                    Whitelist::create(true, true, true)
                 )
                 ->willThrow($scopingException = new RuntimeException('Could not scope file'))
             ;
diff --git a/tests/PhpParser/TraverserFactoryTest.php b/tests/PhpParser/TraverserFactoryTest.php
index 5f6e3596..88a62ef6 100644
--- a/tests/PhpParser/TraverserFactoryTest.php
+++ b/tests/PhpParser/TraverserFactoryTest.php
@@ -28,7 +28,7 @@ public function test_creates_a_new_traverser_at_each_call()
     {
         $prefix = 'Humbug';
 
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         $classReflector = new Reflector(
             (new BetterReflection())->classReflector(),
diff --git a/tests/Scoper/Composer/InstalledPackagesScoperTest.php b/tests/Scoper/Composer/InstalledPackagesScoperTest.php
index 033ad349..4f980361 100644
--- a/tests/Scoper/Composer/InstalledPackagesScoperTest.php
+++ b/tests/Scoper/Composer/InstalledPackagesScoperTest.php
@@ -39,7 +39,7 @@ public function test_delegates_scoping_to_the_decorated_scoper_if_is_not_a_insta
         $fileContents = '';
         $prefix = 'Humbug';
         $patchers = [create_fake_patcher()];
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         /** @var Scoper|ObjectProphecy $decoratedScoperProphecy */
         $decoratedScoperProphecy = $this->prophesize(Scoper::class);
@@ -72,7 +72,7 @@ public function test_it_prefixes_the_composer_autoloaders(string $fileContents,
 
         $prefix = 'Foo';
         $patchers = [create_fake_patcher()];
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         $actual = $scoper->scope($filePath, $fileContents, $prefix, $patchers, $whitelist);
 
diff --git a/tests/Scoper/Composer/JsonFileScoperTest.php b/tests/Scoper/Composer/JsonFileScoperTest.php
index 94f3d7e0..423c9810 100644
--- a/tests/Scoper/Composer/JsonFileScoperTest.php
+++ b/tests/Scoper/Composer/JsonFileScoperTest.php
@@ -39,7 +39,7 @@ public function test_delegates_scoping_to_the_decorated_scoper_if_is_not_a_compo
         $fileContents = '';
         $prefix = 'Humbug';
         $patchers = [create_fake_patcher()];
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         /** @var Scoper|ObjectProphecy $decoratedScoperProphecy */
         $decoratedScoperProphecy = $this->prophesize(Scoper::class);
@@ -72,7 +72,7 @@ public function test_it_prefixes_the_composer_autoloaders(string $fileContents,
 
         $prefix = 'Foo';
         $patchers = [create_fake_patcher()];
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         $actual = $scoper->scope($filePath, $fileContents, $prefix, $patchers, $whitelist);
 
@@ -146,7 +146,7 @@ public function test_it_prefixes_psr0_autoloaders(string $fileContents, string $
 
         $prefix = 'Foo';
         $patchers = [create_fake_patcher()];
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         $actual = $scoper->scope($filePath, $fileContents, $prefix, $patchers, $whitelist);
 
diff --git a/tests/Scoper/NullScoperTest.php b/tests/Scoper/NullScoperTest.php
index dd9ab6ab..cb012f48 100644
--- a/tests/Scoper/NullScoperTest.php
+++ b/tests/Scoper/NullScoperTest.php
@@ -38,7 +38,7 @@ public function test_returns_the_file_content_unchanged()
 
         $patchers = [create_fake_patcher()];
 
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         $scoper = new NullScoper();
 
diff --git a/tests/Scoper/PatchScoperTest.php b/tests/Scoper/PatchScoperTest.php
index 6cec6738..cca7f179 100644
--- a/tests/Scoper/PatchScoperTest.php
+++ b/tests/Scoper/PatchScoperTest.php
@@ -73,7 +73,7 @@ function (string $patcherFilePath, string $patcherPrefix, string $contents) use
             },
         ];
 
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         $this->decoratedScoperProphecy
             ->scope($filePath, $contents, $prefix, $patchers, $whitelist)
diff --git a/tests/Scoper/PhpScoperSpecTest.php b/tests/Scoper/PhpScoperSpecTest.php
index 9f21292b..61c0b7c1 100644
--- a/tests/Scoper/PhpScoperSpecTest.php
+++ b/tests/Scoper/PhpScoperSpecTest.php
@@ -53,6 +53,7 @@ class PhpScoperSpecTest extends TestCase
         'prefix',
         'whitelist',
         'whitelist-global-constants',
+        'whitelist-global-classes',
         'whitelist-global-functions',
         'registered-classes',
         'registered-functions',
@@ -62,6 +63,7 @@ class PhpScoperSpecTest extends TestCase
         'prefix',
         'whitelist',
         'whitelist-global-constants',
+        'whitelist-global-classes',
         'whitelist-global-functions',
         'registered-classes',
         'registered-functions',
@@ -250,6 +252,7 @@ private function parseSpecFile(string $file, array $meta, $fixtureTitle, $fixtur
             $fixtureSet['prefix'] ?? $meta['prefix'],
             Whitelist::create(
                 $fixtureSet['whitelist-global-constants'] ?? $meta['whitelist-global-constants'],
+                $fixtureSet['whitelist-global-classes'] ?? $meta['whitelist-global-classes'],
                 $fixtureSet['whitelist-global-functions'] ?? $meta['whitelist-global-functions'],
                 ...($fixtureSet['whitelist'] ?? $meta['whitelist'])
             ),
diff --git a/tests/Scoper/PhpScoperTest.php b/tests/Scoper/PhpScoperTest.php
index 94a1ea70..91e611c6 100644
--- a/tests/Scoper/PhpScoperTest.php
+++ b/tests/Scoper/PhpScoperTest.php
@@ -144,7 +144,7 @@ public function test_can_scope_a_PHP_file()
         $prefix = 'Humbug';
         $filePath = 'file.php';
         $patchers = [create_fake_patcher()];
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         $contents = <<<'PHP'
 <?php
@@ -172,7 +172,7 @@ public function test_does_not_scope_file_if_is_not_a_PHP_file()
         $fileContents = '';
         $prefix = 'Humbug';
         $patchers = [create_fake_patcher()];
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         $this->decoratedScoperProphecy
             ->scope($filePath, $fileContents, $prefix, $patchers, $whitelist)
@@ -204,7 +204,7 @@ public function test_can_scope_a_PHP_file_with_the_wrong_extension()
         $prefix = 'Humbug';
         $filePath = 'file';
         $patchers = [create_fake_patcher()];
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         $contents = <<<'PHP'
 <?php
@@ -232,7 +232,7 @@ public function test_can_scope_PHP_binary_files()
         $prefix = 'Humbug';
         $filePath = 'hello';
         $patchers = [create_fake_patcher()];
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         $contents = <<<'PHP'
 #!/usr/bin/env php
@@ -263,7 +263,7 @@ public function test_does_not_scope_a_non_PHP_binary_files()
 
         $patchers = [create_fake_patcher()];
 
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         $contents = <<<'PHP'
 #!/usr/bin/env bash
@@ -309,7 +309,7 @@ public function test_cannot_scope_an_invalid_PHP_file()
 
         $prefix = 'Humbug';
         $patchers = [create_fake_patcher()];
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         try {
             $this->scoper->scope($filePath, $contents, $prefix, $patchers, $whitelist);
@@ -334,7 +334,7 @@ public function test_creates_a_new_traverser_for_each_file()
 
         $prefix = 'Humbug';
         $patchers = [create_fake_patcher()];
-        $whitelist = Whitelist::create(true, true, 'Foo');
+        $whitelist = Whitelist::create(true, true, true, 'Foo');
 
         $this->decoratedScoperProphecy
             ->scope(Argument::any(), Argument::any(), $prefix, $patchers, $whitelist)
diff --git a/tests/WhitelistTest.php b/tests/WhitelistTest.php
index 659db6f4..d46916ed 100644
--- a/tests/WhitelistTest.php
+++ b/tests/WhitelistTest.php
@@ -34,7 +34,7 @@ public function test_it_can_be_created_from_a_list_of_strings(
         array $expectedSymbols,
         array $expectedConstants
     ) {
-        $whitelistObject = Whitelist::create(true, true, ...$whitelist);
+        $whitelistObject = Whitelist::create(true, true, true, ...$whitelist);
 
         $whitelistReflection = new ReflectionClass(Whitelist::class);
 
@@ -51,14 +51,16 @@ public function test_it_can_be_created_from_a_list_of_strings(
         $actualConstants = $whitelistConstantReflection->getValue($whitelistObject);
 
         $this->assertTrue($whitelistObject->whitelistGlobalConstants());
+        $this->assertTrue($whitelistObject->whitelistGlobalClasses());
         $this->assertTrue($whitelistObject->whitelistGlobalFunctions());
         $this->assertSame($expectedNamespaces, $actualNamespaces);
         $this->assertSame($expectedSymbols, array_flip($actualSymbols));
         $this->assertSame($expectedConstants, array_flip($actualConstants));
 
-        $whitelistObject = Whitelist::create(false, false, ...$whitelist);
+        $whitelistObject = Whitelist::create(false, false, false, ...$whitelist);
 
         $this->assertFalse($whitelistObject->whitelistGlobalConstants());
+        $this->assertFalse($whitelistObject->whitelistGlobalClasses());
         $this->assertFalse($whitelistObject->whitelistGlobalFunctions());
         $this->assertSame($expectedNamespaces, $actualNamespaces);
         $this->assertSame($expectedSymbols, array_flip($actualSymbols));
@@ -80,7 +82,6 @@ public function test_it_can_tell_if_a_constant_is_a_whitelisted_global_constant(
      */
     public function test_it_can_tell_if_a_class_is_a_whitelisted_global_class(Whitelist $whitelist, string $constant, bool $expected)
     {
-        $this->markTestSkipped('TODO');
         $actual = $whitelist->isGlobalWhitelistedClass($constant);
 
         $this->assertSame($expected, $actual);
@@ -98,7 +99,7 @@ public function test_it_can_tell_if_a_function_is_a_whitelisted_global_function(
 
     public function test_it_can_record_whitelisted_functions()
     {
-        $whitelist = Whitelist::create(true, true);
+        $whitelist = Whitelist::create(true, true, true);
 
         $whitelist->recordWhitelistedFunction(
             new FullyQualified('Acme\foo'),
@@ -125,7 +126,7 @@ public function test_it_can_record_whitelisted_functions()
     public function test_it_can_record_whitelisted_classes()
     {
         $this->markTestSkipped('TODO');
-        $whitelist = Whitelist::create(true, true);
+        $whitelist = Whitelist::create(true, true, true);
 
         $whitelist->recordWhitelistedClass(
             new FullyQualified('Acme\foo'),
@@ -201,258 +202,345 @@ public function provideWhitelists(): Generator
 
     public function provideGlobalConstantNames(): Generator
     {
-        yield [
-            Whitelist::create(true, true),
-            'PHP_SCOPER_VERSION',
-            true,
-        ];
-
-        yield [
-            Whitelist::create(false, true),
-            'PHP_SCOPER_VERSION',
-            false,
-        ];
-
-        yield [
-            Whitelist::create(true, true),
-            'Humbug\PHP_SCOPER_VERSION',
-            false,
-        ];
-
-        yield [
-            Whitelist::create(false, true),
-            'Humbug\PHP_SCOPER_VERSION',
-            false,
-        ];
-
-        yield [
-            Whitelist::create(true, true),
-            'Humbug\PHP_SCOPER_VERSION',
-            false,
-        ];
-
-        yield [
-            Whitelist::create(false, true, 'PHP_SCOPER_VERSION'),
-            'PHP_SCOPER_VERSION',
-            false,
-        ];
+        foreach ([true, false] as $whitelistGlobalClasses) {
+            foreach ([true, false] as $whitelistGlobalFunctions) {
+                yield [
+                    Whitelist::create(true, $whitelistGlobalClasses, $whitelistGlobalFunctions),
+                    'PHP_SCOPER_VERSION',
+                    true,
+                ];
+
+                yield [
+                    Whitelist::create(false, $whitelistGlobalClasses, $whitelistGlobalFunctions),
+                    'PHP_SCOPER_VERSION',
+                    false,
+                ];
+                yield [
+                    Whitelist::create(true, $whitelistGlobalClasses, $whitelistGlobalFunctions, 'PHP_SCOPER_VERSION'),
+                    'PHP_SCOPER_VERSION',
+                    true,
+                ];
+
+                yield [
+                    Whitelist::create(false, $whitelistGlobalClasses, $whitelistGlobalFunctions, 'PHP_SCOPER_VERSION'),
+                    'PHP_SCOPER_VERSION',
+                    false,
+                ];
+
+                yield [
+                    Whitelist::create(true, $whitelistGlobalClasses, $whitelistGlobalFunctions),
+                    'Humbug\PHP_SCOPER_VERSION',
+                    false,
+                ];
+
+                yield [
+                    Whitelist::create(false, $whitelistGlobalClasses, $whitelistGlobalFunctions),
+                    'Humbug\PHP_SCOPER_VERSION',
+                    false,
+                ];
+
+                yield [
+                    Whitelist::create(true, $whitelistGlobalClasses, $whitelistGlobalFunctions, 'Humbug\PHP_SCOPER_VERSION'),
+                    'Humbug\PHP_SCOPER_VERSION',
+                    false,
+                ];
+
+                yield [
+                    Whitelist::create(false, $whitelistGlobalClasses, $whitelistGlobalFunctions, 'Humbug\PHP_SCOPER_VERSION'),
+                    'Humbug\PHP_SCOPER_VERSION',
+                    false,
+                ];
+            }
+        }
     }
 
     public function provideGlobalClassNames(): Generator
     {
-        yield [
-            Whitelist::create(true, true, 'PHP_SCOPER_VERSION'),
-            'Foo',
-            false,
-        ];
+        foreach ([true, false] as $whitelistGlobalConstants) {
+            foreach ([true, false] as $whitelistGlobalFunctions) {
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, true, $whitelistGlobalFunctions),
+                    'Foo',
+                    true,
+                ];
+
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, false, $whitelistGlobalFunctions),
+                    'Foo',
+                    false,
+                ];
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, true, $whitelistGlobalFunctions, 'Foo'),
+                    'Foo',
+                    true,
+                ];
+
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, false, $whitelistGlobalFunctions, 'Foo'),
+                    'Foo',
+                    false,
+                ];
+
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, true, $whitelistGlobalFunctions),
+                    'Acme\Foo',
+                    false,
+                ];
+
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, false, $whitelistGlobalFunctions),
+                    'Acme\Foo',
+                    false,
+                ];
+
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, true, $whitelistGlobalFunctions, 'Acme\Foo'),
+                    'Acme\Foo',
+                    false,
+                ];
+
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, false, $whitelistGlobalFunctions, 'Acme\Foo'),
+                    'Acme\Foo',
+                    false,
+                ];
+            }
+        }
     }
 
     public function provideGlobalFunctionNames(): Generator
     {
-        yield [
-            Whitelist::create(true, true, 'PHP_SCOPER_VERSION'),
-            'foo',
-            true,
-        ];
-
-        yield [
-            Whitelist::create(true, false, 'PHP_SCOPER_VERSION'),
-            'foo',
-            false,
-        ];
-
-        yield [
-            Whitelist::create(true, true, 'PHP_SCOPER_VERSION'),
-            'Acme\foo',
-            false,
-        ];
-
-        yield [
-            Whitelist::create(true, false, 'PHP_SCOPER_VERSION'),
-            'Acme\foo',
-            false,
-        ];
+        foreach ([true, false] as $whitelistGlobalConstants) {
+            foreach ([true, false] as $whitelistGlobalClasses) {
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, $whitelistGlobalClasses, true),
+                    'foo',
+                    true,
+                ];
+
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, $whitelistGlobalClasses, false),
+                    'foo',
+                    false,
+                ];
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, $whitelistGlobalClasses, true, 'foo'),
+                    'foo',
+                    true,
+                ];
+
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, $whitelistGlobalClasses, false, 'foo'),
+                    'foo',
+                    false,
+                ];
+
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, $whitelistGlobalClasses, true),
+                    'Acme\foo',
+                    false,
+                ];
+
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, $whitelistGlobalClasses, false),
+                    'Acme\foo',
+                    false,
+                ];
+
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, $whitelistGlobalClasses, true, 'Acme\foo'),
+                    'Acme\foo',
+                    false,
+                ];
+
+                yield [
+                    Whitelist::create($whitelistGlobalConstants, $whitelistGlobalClasses, false, 'Acme\foo'),
+                    'Acme\foo',
+                    false,
+                ];
+            }
+        }
     }
 
     public function provideSymbolNames(): Generator
     {
         yield [
-            Whitelist::create(true, true),
+            Whitelist::create(true, true, true),
             'Acme\Foo',
             false,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\Foo'),
+            Whitelist::create(true, true, true, 'Acme\Foo'),
             'Acme\Foo',
             false,
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\Foo'),
+            Whitelist::create(true, true, true, 'Acme\Foo'),
             'acme\foo',
             false,
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\Foo'),
+            Whitelist::create(true, true, true, 'Acme\Foo'),
             'acme\foo',
             true,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\Foo'),
+            Whitelist::create(true, true, true, 'Acme\Foo'),
             'Acme\Foo\Bar',
             true,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\Foo'),
+            Whitelist::create(true, true, true, 'Acme\Foo'),
             'Acme',
             true,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme'),
+            Whitelist::create(true, true, true, 'Acme'),
             'Acme',
             true,
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme'),
+            Whitelist::create(true, true, true, 'Acme'),
             'Acme',
             false,
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme'),
+            Whitelist::create(true, true, true, 'Acme'),
             'acme',
             false,
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme'),
+            Whitelist::create(true, true, true, 'Acme'),
             'acme',
             true,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\*'),
+            Whitelist::create(true, true, true, 'Acme\*'),
             'Acme',
             true,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\*'),
+            Whitelist::create(true, true, true, 'Acme\*'),
             'Acme',
             false,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\*'),
+            Whitelist::create(true, true, true, 'Acme\*'),
             'acme',
             true,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\*'),
+            Whitelist::create(true, true, true, 'Acme\*'),
             'acme',
             false,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\*'),
+            Whitelist::create(true, true, true, 'Acme\*'),
             'Acme\Foo',
             true,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\*'),
+            Whitelist::create(true, true, true, 'Acme\*'),
             'Acme\Foo',
             false,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\*'),
+            Whitelist::create(true, true, true, 'Acme\*'),
             'acme\Foo',
             true,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\*'),
+            Whitelist::create(true, true, true, 'Acme\*'),
             'acme\Foo',
             false,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\F*'),
+            Whitelist::create(true, true, true, 'Acme\F*'),
             'Acme',
             true,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\F*'),
+            Whitelist::create(true, true, true, 'Acme\F*'),
             'Acme',
             false,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\F*'),
+            Whitelist::create(true, true, true, 'Acme\F*'),
             'acme',
             true,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\F*'),
+            Whitelist::create(true, true, true, 'Acme\F*'),
             'acme',
             false,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\F*'),
+            Whitelist::create(true, true, true, 'Acme\F*'),
             'Acme\Foo',
             true,
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\F*'),
+            Whitelist::create(true, true, true, 'Acme\F*'),
             'Acme\Foo',
             false,
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\F*'),
+            Whitelist::create(true, true, true, 'Acme\F*'),
             'acme\foo',
             true,
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\F*'),
+            Whitelist::create(true, true, true, 'Acme\F*'),
             'acme\foo',
             false,
             true,
@@ -462,67 +550,67 @@ public function provideSymbolNames(): Generator
     public function provideNamespaceWhitelists(): Generator
     {
         yield [
-            Whitelist::create(true, true),
+            Whitelist::create(true, true, true),
             'Acme\Foo',
             false,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\Foo\*'),
+            Whitelist::create(true, true, true, 'Acme\Foo\*'),
             'Acme\Foo',
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\Foo\*'),
+            Whitelist::create(true, true, true, 'Acme\Foo\*'),
             'acme\foo',
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\*'),
+            Whitelist::create(true, true, true, 'Acme\*'),
             'Acme\Foo',
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\*'),
+            Whitelist::create(true, true, true, 'Acme\*'),
             'acme\foo',
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\Foo\*'),
+            Whitelist::create(true, true, true, 'Acme\Foo\*'),
             'Acme\Foo\Bar',
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\Foo\*'),
+            Whitelist::create(true, true, true, 'Acme\Foo\*'),
             'acme\foo\bar',
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, '\*'),
+            Whitelist::create(true, true, true, '\*'),
             'Acme',
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, '\*'),
+            Whitelist::create(true, true, true, '\*'),
             'acme',
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, '\*'),
+            Whitelist::create(true, true, true, '\*'),
             'Acme\Foo',
             true,
         ];
 
         yield [
-            Whitelist::create(true, true, '\*'),
+            Whitelist::create(true, true, true, '\*'),
             'acme\foo',
             true,
         ];
@@ -531,47 +619,47 @@ public function provideNamespaceWhitelists(): Generator
     public function provideWhitelistToConvert(): Generator
     {
         yield [
-            Whitelist::create(true, true),
+            Whitelist::create(true, true, true),
             [],
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\Foo'),
+            Whitelist::create(true, true, true, 'Acme\Foo'),
             ['Acme\Foo'],
         ];
 
         yield [
-            Whitelist::create(true, true, '\Acme\Foo'),
+            Whitelist::create(true, true, true, '\Acme\Foo'),
             ['Acme\Foo'],
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme\Foo\*'),
+            Whitelist::create(true, true, true, 'Acme\Foo\*'),
             ['Acme\Foo\*'],
         ];
 
         yield [
-            Whitelist::create(true, true, '\Acme\Foo\*'),
+            Whitelist::create(true, true, true, '\Acme\Foo\*'),
             ['Acme\Foo\*'],
         ];
 
         yield [
-            Whitelist::create(true, true, '*'),
+            Whitelist::create(true, true, true, '*'),
             ['*'],
         ];
 
         yield [
-            Whitelist::create(true, true, '\*'),
+            Whitelist::create(true, true, true, '\*'),
             ['*'],
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme', 'Acme\Foo', 'Acme\Foo\*', '*'),
+            Whitelist::create(true, true, true, 'Acme', 'Acme\Foo', 'Acme\Foo\*', '*'),
             ['Acme', 'Acme\Foo', 'Acme\Foo\*', '*'],
         ];
 
         yield [
-            Whitelist::create(true, true, 'Acme', 'Acme'),
+            Whitelist::create(true, true, true, 'Acme', 'Acme'),
             ['Acme'],
         ];
     }